Staff Accountant: Internal Accounting & Finance

Gross Mendelsohn, one of the Mid-Atlantic’s leading independent CPA and advisory firms, is seeking a highly organized, detail-oriented Staff Accountant to join our Internal Accounting & Finance Department.


This is NOT a client-facing or billable role. This is a critical internal position responsible for supporting the firm’s financial operations, including accounts receivable, accounts payable, collections support, payment processing, reconciliations, billing support, and related internal accounting activities.


As the firm continues to grow and modernize its internal infrastructure, systems, and reporting processes, this role will work closely with the Controller and internal leadership to help ensure the accuracy, timeliness, efficiency, and control of core accounting processes. The ideal candidate will be comfortable working in a professional services environment, handling confidential financial information, and supporting partners, professionals, vendors, and internal stakeholders with a high level of responsiveness and professionalism.


Key Responsibilities


Accounts Receivable & Collections Support



Manage the firm’s accounts receivable process and monitor outstanding receivable balances
Process client payments, including ACH, portal payments, checks, and wires
Apply payments accurately within firm client and accounting systems
Monitor aging reports and coordinate with partners and engagement teams regarding outstanding balances
Support the firm’s collections process by tracking receivables, coordinating internal follow-up, and assisting with timely resolution of outstanding balances
Maintain accurate AR records and assist in resolving billing or payment discrepancies
Record daily receipts and assist with bank reconciliation processes
Follow established documentation standards and internal control procedures related to client receipts and payment application

Accounts Payable



Process vendor invoices and ensure accurate coding, documentation, and approval prior to payment
Maintain vendor records, documentation, and related payment information
Prepare and process vendor payments, including ACH, check, and electronic payments
Ensure vendor payments are made accurately, timely, and in accordance with firm policies and approval workflows
Respond to vendor inquiries regarding payment status
Assist with tracking recurring expenses, subscriptions, and other ongoing vendor commitments
Support internal controls over vendor setup, invoice approval, payment processing, and accounting documentation

Time and Billing System Support



Support the setup and maintenance of client accounts across firm systems
Assist service lines with billing, invoicing, and related administrative support
Process updates and adjustments to client records in response to partner, engagement team, and operational needs
Assist with accounting system updates, process changes, and related transition activities as the firm modernizes its internal finance platform
Help maintain accurate client, billing, and payment records across applicable firm systems

Internal Financial Operations



Assist with bank reconciliations and financial account reconciliations
Support month-end and year-end accounting processes
Maintain accurate documentation for accounting records and transactions
Assist with financial reporting and ad hoc requests from the Controller
Support internal accounting process improvements and documentation
Assist in maintaining strong internal controls over receipts, disbursements, vendor records, and accounting documentation
Support the continued modernization of the firm’s internal accounting processes, systems, reporting, and documentation

Collaboration



Work closely with the Controller and internal leadership to maintain financial accuracy and timely accounting processes
Coordinate with partners, engagement teams, and internal departments regarding receivables, payments, billing matters, and accounting inquiries
Provide timely, professional, and accurate responses to internal and vendor inquiries
Support internal accounting initiatives, process improvements, and documentation efforts
Handle confidential financial, client, vendor, and firm information with discretion and professionalism
Perform other duties as assigned



Bachelor’s degree in accounting, finance, business, or a related field preferred



Equivalent professional experience in accounting, bookkeeping, finance, or internal accounting operations will also be considered



2-5+ years of accounting, bookkeeping, finance, AR/AP, or related internal accounting experience



Experience within an accounting firm, law firm, consulting firm, or other professional services environment preferred



Experience with accounts receivable, accounts payable, billing support, payment processing, and reconciliations preferred



Experience working with confidential financial, vendor, client, or business information preferred






Required Skills and Competencies


Technical Skills




Strong understanding of basic accounting principles



Experience with Sage 100, Microsoft Business Central, or similar accounting systems preferred



Strong proficiency in Microsoft Office, particularly Excel



Ability to work within multiple accounting, billing, and financial systems



Familiarity with electronic payment processes, vendor records, client payment application, and accounting documentation preferred



Analytical & Organizational Skills




Strong attention to detail and accuracy



Ability to track and reconcile financial transactions



Strong organizational and time management skills



Ability to manage multiple priorities and meet deadlines



Ability to identify discrepancies, ask appropriate questions, and help resolve accounting or payment issues



Comfort working in a changing environment as systems, processes, and reporting practices continue to evolve



Professional & Interpersonal Skills




Strong written and verbal communication skills



Ability to interact professionally with partners, professionals, vendors, and internal stakeholders



Strong internal client-service orientation



Collaborative mindset and ability to work independently



Strong problem-solving skills and initiative



Ability to handle confidential financial and business information with discretion



Professional judgment, reliability, and accountability in handling firm financial processes






Why Join Gross Mendelsohn?




Be part of a respected independent CPA and advisory firm committed to strategic growth



Support the continued modernization of the firm’s internal accounting and finance operations



Work in a collaborative, team-oriented professional services environment



Competitive compensation and comprehensive benefits



Free parking at our Locust Point/McHenry Row location



Limited hybrid flexibility available based on business needs and prior approval



Work Environment


This role operates primarily in a professional office environment. Due to the nature of payment processing, records management, vendor coordination, and internal accounting support, the position is primarily office-based, with limited hybrid flexibility available based on business needs and prior approval.


Physical Requirements


Ability to sit for extended periods, lift up to 20 pounds, and manage physical files and documentation as needed.


Join Us


If you are a detail-oriented accounting professional who enjoys supporting the internal operations of a growing professional services firm, we encourage you to apply.





Gross Mendelsohn is an equal opportunity employer


committed to fostering a respectful and inclusive workplace.